Wiles C M, Edwards R H
Clin Physiol. 1982 Dec;2(6):499-512. doi: 10.1111/j.1475-097x.1982.tb00056.x.
The rate of intramuscular temperature rise (dT/dt) has been measured in ischaemic isometric contractions of adductor pollicis in man as an index of the rate of energy turnover. Experiments were designed so as to compare dT/dt in contractions made at a constant force but at differing intramuscular temperatures or degrees of ischaemic fatigue. In the same experiments relaxation rate was measured. As intramuscular temperature was raised from 25 to 37 degrees C, dT/dt increased with a Q10 of 1 . 8 and was closely correlated with relaxation rate. During constant force submaximal ischaemic contractions dT/dt fell, failed to recover with ischaemic rest but did so within 10 min of restoration of the circulation. During the fatiguing contraction and recovery thereafter dT/dt was linearly correlated with relaxation rate. The results show that the rate of energy turnover at a constant force is susceptible to change in association with alteration in the contractile speed of the muscle. It is suggested that relaxation rate may be used as an index of the capacity of the muscle to liberate energy.
在人体拇收肌的缺血性等长收缩过程中，测量了肌肉内温度上升速率（dT/dt），以此作为能量转换速率的指标。实验设计旨在比较在恒定力量下进行收缩但肌肉内温度不同或缺血性疲劳程度不同时的dT/dt。在相同实验中测量了放松速率。随着肌肉内温度从25℃升高到37℃，dT/dt以1.8的Q10值增加，并且与放松速率密切相关。在恒定力量的次最大缺血性收缩过程中，dT/dt下降，缺血性休息时未能恢复，但在恢复循环后10分钟内恢复。在疲劳性收缩及其后的恢复过程中，dT/dt与放松速率呈线性相关。结果表明，在恒定力量下的能量转换速率容易随着肌肉收缩速度的改变而变化。有人提出，放松速率可作为肌肉释放能量能力的指标。
